The Vauxhall Insignia Sports Tourer is well equipped and can be cheap to buy, but it’s not quite as spacious, refined or efficient as its rivalsget the best price
As the name suggests, Design Nav adds sat-nav to the 7.0in infotainment screen.
Engine:1.6 Turbo D 
This higher-powered version of the 1.6 diesel unit is noticeably punchier than the 108bhp option, but it has a narrower power band. Even so, the extra shove will be useful if you have a boot full of stuff.
A vast boot, lots of high-tech equipment and a beautifully bui...